EP0088233B1 - Manual belt grinding machine - Google Patents

Manual belt grinding machine Download PDF

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Publication number
EP0088233B1
EP0088233B1 EP83100996A EP83100996A EP0088233B1 EP 0088233 B1 EP0088233 B1 EP 0088233B1 EP 83100996 A EP83100996 A EP 83100996A EP 83100996 A EP83100996 A EP 83100996A EP 0088233 B1 EP0088233 B1 EP 0088233B1
Authority
EP
European Patent Office
Prior art keywords
grinding machine
belt
dust bag
drive unit
belt grinding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83100996A
Other languages
German (de)
French (fr)
Other versions
EP0088233A2 (en
EP0088233A3 (en
Inventor
Otto Bergler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eugen Lutz GmbH and Co
Black and Decker Overseas GmbH
Original Assignee
Eugen Lutz GmbH and Co
Black and Decker Overseas GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eugen Lutz GmbH and Co , Black and Decker Overseas GmbH filed Critical Eugen Lutz GmbH and Co
Priority to AT83100996T priority Critical patent/ATE29685T1/en
Publication of EP0088233A2 publication Critical patent/EP0088233A2/en
Publication of EP0088233A3 publication Critical patent/EP0088233A3/en
Application granted granted Critical
Publication of EP0088233B1 publication Critical patent/EP0088233B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/107—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with belt-like tools

Definitions

  • the features of subclaims 2, 3 and 4 result in a particularly simple attachment option for the dust bag.
  • the features of claim 5 have the advantage that a separate protective hood for the sanding belt in the front area is no longer necessary. This task can be performed by the dust bag holder, which is located in the front area of the hand-held belt sander due to the offset arrangement of the drive unit. If the dust bag holder is removed, the advantage is achieved that in front of the drive unit in an area that is not readily accessible to the operator's hands, there is a free abrasive belt surface that can be used, for example, to grind grooves. If, on the other hand, the dust bag with its holder is attached, the front area is securely covered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

1. Manual belt grinding machine with an end-less grinding belt (1) run over two guide rollers (2, 3) and a pressure shoe (4) with a drive unit (6) arranged above the grinding belt with a handle (5) and with a fan for dust extraction and an extraction channel with an extractor opening which can be covered with a dust bag, on which the drive unit (6) is placed in the area of the front guide roller (2) and the extractor opening (14) is arranged approximately above this front guide roller (2), characterised in that the extractor opening (14) is open forwards and provided there with a holding flange (15) for an easily removable clamp holder (16) for the dust bag (17), which is constructed in such a way that it is fitted at right angles in front of the manual belt grinding machine.

Description

Die Erfindung betrifft einen Handbandschleifer nach dem Oberbegriff des Patentanspruches 1.The invention relates to a hand belt sander according to the preamble of patent claim 1.

Handbandschleifer dieser Art sind bekannt (US-A 33 91 499). Bei den bekannten Bauarten ist der Staubsack seitlich von dem Gehäuse des Handbandschleifers angeordnet. Da das Antriebsaggregat etwas aus der Mitte des Handbandschleifers heraus in den Bereich der vorderen Umlenkrolle verlegt ist, liegt auch die Ausblasöffnung etwa oberhalb dieser Umlenkrolle, ragt jedoch nach oben, so dass der angesetzte Staubsack den Handbandschleifer oben und seitlich überragt. Solche Bauarten weisen daher den Nachteil auf, dass der Staubsack bei der Bearbeitung hinderlich ist. Dies gilt insbesondere dann, wenn der Handbandschleifer in üblicher Weise von der rechten Hand der Bedienungsperson geführt ist. Der Staubsack behindert dann die Sicht. Nachteilig ist auch, dass Handbandschleifer der bekannten Bauart sehr breit und voluminös gebaut sind.Hand belt grinders of this type are known (US-A 33 91 499). In the known designs, the dust bag is arranged laterally from the housing of the hand-held belt sander. Since the drive unit is relocated somewhat from the center of the hand-held belt sander to the area of the front deflection roller, the blow-out opening also lies approximately above this deflection roller, but protrudes upwards, so that the dust bag attached projects above and beyond the hand-held belt sander. Such designs therefore have the disadvantage that the dust bag is a hindrance to processing. This applies in particular if the hand belt sander is guided in the usual way by the right hand of the operator. The dust bag then obstructs the view. Another disadvantage is that hand-held belt grinders of the known type are very wide and voluminous.

Der Erfindung liegt die Aufgabe zugrunde, einen Handbandschleifer der eingangs genannten Art so auszubilden, dass bei der Bearbeitung eine Behinderung durch den Staubsack nicht auftreten kann.The invention has for its object to design a hand belt grinder of the type mentioned in such a way that a hindrance from the dust bag cannot occur during processing.

Zur Lösung dieser Aufgabe werden bei einem Handbandschleifer der eingangs genannten Art die kennzeichnenden Merkmale des Patentanspruches 1 vorgesehen. Diese Ausgestaltung weist den grossen Vorteil auf, dass der Staubsack nicht mehr seitlich, sondern vor dem Antriebsaggregat angeordnet ist, so dass dadurch eine sehr schmale Bauweise ermöglicht wird und eine Behinderung in der Handhabung und in der seitlichen Sicht auf die Schleifbandkanten nicht mehr eintritt.To solve this problem, the characterizing features of claim 1 are provided in a hand belt grinder of the type mentioned. This configuration has the great advantage that the dust bag is no longer arranged on the side but in front of the drive unit, so that a very narrow construction is made possible and there is no longer any hindrance in handling and in the lateral view of the sanding belt edges.

Vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung ergeben sich aus den Unteransprüchen. Die Merkmale der Unteransprüche 2, 3 und 4 ergeben eine besonders einfache Anbringungsmöglichkeit für den Staubsack. Die Merkmale des Anspruches 5 bringen den Vorteil mit sich, dass eine gesonderte Schutzhaube für das Schleifband im vorderen Bereich nicht mehr notwendig wird. Diese Aufgabe kann die Staubsackhalterung übernehmen, die aufgrund der nach vorne versetzten Anordnung des Antriebsaggregates im vorderen Bereich des Handbandschleifers liegt. Wird die Staubsackhalterung abgenommen, dann wird der Vorteil erreicht, dass vor dem Antriebsaggregat in einen Bereich, der nicht ohne weiteres für die Hände der Bedienungsperson zugängig ist, eine freie Schleifbandfläche zur Verfügung steht, die beispielsweise zum Schleifen von Auskehlungen verwendet werden kann. Wird dagegen der Staubsack mit seiner Halterung aufgesteckt, ist der vordere Bereich sicher abgedeckt.Advantageous refinements of the subject matter of the invention emerge from the subclaims. The features of subclaims 2, 3 and 4 result in a particularly simple attachment option for the dust bag. The features of claim 5 have the advantage that a separate protective hood for the sanding belt in the front area is no longer necessary. This task can be performed by the dust bag holder, which is located in the front area of the hand-held belt sander due to the offset arrangement of the drive unit. If the dust bag holder is removed, the advantage is achieved that in front of the drive unit in an area that is not readily accessible to the operator's hands, there is a free abrasive belt surface that can be used, for example, to grind grooves. If, on the other hand, the dust bag with its holder is attached, the front area is securely covered.

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispieles schematisch dargestellt und in der nachfolgenden Beschreibung erläutert. Es zeigen:

  • Fig. 1 eine seitliche Ansicht eines Handbandschleifers nach der Erfindung,
  • Fig. 2 die Stirnansicht in Richtung des Pfeiles 11 der Fig. 1 auf einen erfindungsgemässen Handbandschleifer,
  • Fig. 3 die Stirnansicht auf den mit der Bandschleiffläche nach oben gedrehten Bandschleifer, der stationär angebracht ist und
  • Fig. 4 eine Teil- Seitenansicht des freien Bandendes mit abgenommenem Staubsack und beim Einsatz zum Schleifen einer Auskehlung.
The invention is shown schematically in the drawing using an exemplary embodiment and explained in the following description. Show it:
  • 1 is a side view of a hand belt sander according to the invention,
  • 2 shows the end view in the direction of arrow 11 of FIG. 1 on a hand belt sander according to the invention,
  • Fig. 3 is an end view of the belt sander with the belt grinding surface turned upwards, which is attached stationary and
  • Fig. 4 is a partial side view of the free end of the tape with the dust bag removed and when used to grind a groove.

In den Fig. 1 und 2 ist ein umlaufendes Schleifband 1 von zwei Umlenkrollen 2 und 3 geführt, von denen die hintere Umlenkrolle 3 angetrieben ist.1 and 2, a rotating grinding belt 1 is guided by two deflecting rollers 2 and 3, of which the rear deflecting roller 3 is driven.

Beide Umlenkrollen sowie ein das untere Trum des Schleifbandes 1 über den Bereich der Umlenkrollen 2 und 3 nach unten drückender Druckschuh 4 sind in nicht dargestellter und bekannter Weise in einem Führungsgehäuse für den Handbandschleifer angeordnet, das einen nach oben ragenden Handgriff 5 aufweist, der etwa in der Längsmittelebene des Schleifbandes 2 liegt. Ein Antriebsaggregat 6 in Form eines Elektromotors ist in den vorderen Bereich des Schleifbandes 1 versetzt angeordnet, so dass die vordere Begrenzung dieses Antriebsaggregates 6 bis in den Bereich oberhalb der Umlenkrolle 2 reicht. Das Schleifband 1 ist im Bereich vor dem Antriebsaggregat 6 vom Gehäuse des Handbandschleifers nicht abgedeckt, so dass über die seitliche Abdekkung, die mit der vorderen Begrenzung 9 angedeutet ist, die Führungsteile 10 für die Aufnahme der Lagerung der vorderen Umlenkrolle 2 und des Schleifbandes 1 herausragen.Both deflection rollers and a pressure shoe 4, which presses the lower run of the grinding belt 1 down over the region of the deflection rollers 2 and 3, are arranged in a guide housing for the hand-held sander, which has an upwardly projecting handle 5, which is approximately in the longitudinal center plane of the grinding belt 2. A drive unit 6 in the form of an electric motor is arranged offset in the front region of the grinding belt 1, so that the front boundary of this drive unit 6 extends into the region above the deflection roller 2. The sanding belt 1 is not covered in the area in front of the drive unit 6 by the housing of the hand-held belt sander, so that the guide parts 10 for receiving the bearing of the front deflection roller 2 and the sanding belt 1 protrude beyond the lateral cover, which is indicated by the front boundary 9 .

Vom Motor 6 aus verläuft innerhalb der in diesem Bereich seitlich herausragenden Gehäuseabdeckung 11 (Fig. 2) ein Antriebsriemen, der zu einem Getrieberad führt, das dann in nicht näher dargestellter Weise in Wirkverbindung mit der Umlenkrolle 3 steht. Der Antrieb vom Antriebsaggregat 6 zum Schleifband ist von bekannter Art.A drive belt runs from the motor 6 within the housing cover 11 which projects laterally in this area (FIG. 2) and leads to a gear wheel which is then operatively connected to the deflection roller 3 in a manner not shown in detail. The drive from the drive unit 6 to the grinding belt is of a known type.

Auf der oberhalb der vorderen Umlenkrolle 2 liegenden Vorderseite des Antriebsaggregates 6 liegt die Mündung 14 eines in bekannter Weise von dem oberen Trum des Schleifbandes 1 ausgehenden Absaugkanales für den bei der Bearbeitung entstehenden Staub, der von dort über ein mit dem Elektromotor verbundenes Gebläse abgesaugt und zur Mündung 14 befördert wird. Die Mündung 14 weist einen Flansch 15 auf, über die eine Klemmhalterung 16 für einen Staubsack 17 geschoben ist. Zur Halterung des quer vor dem Handbandschleifer liegenden Staubsackes 17 ist eine Halterung 18 vorgesehen, die von der über den als Führung ausgebildeten Flansch 15 geschobenen Klemmhalterung 16 ausgeht. Die Haiterung 18 besteht im Ausführungsbeispiel aus einem Stück mit der Klemmhalterung 16, die eine U-förmige Führung mit leicht konisch auseinanderstrebenden Schenkeln bildet. Die beiden Schenkel werden über den entsprechend ausgebildeten Flansch 15 geschoben und sichern so den Halt der Klemmhalterung 16 mit der Halterung 18. Die Halterung 18 besitzt einen nach oben führenden Stegteil 20, der in einen quer verlaufenden und den Staubsack 17 oben haltenden Bügel 22 übergeht. An ihrer Unterseite weist die Halterung 18 eine Schutzleiste 19 auf, die sich über den ansonsten offenen vorderen Bereich des Schleifbandes 1 und über die vordere Umlenkrolle 2 erstreckt.On the front of the drive unit 6 above the front deflection roller 2 there is the mouth 14 of a suction channel, starting in a known manner, from the upper run of the grinding belt 1 for the dust arising during processing, which is suctioned off from there via a fan connected to the electric motor and for Mouth 14 is promoted. The mouth 14 has a flange 15 over which a clamping bracket 16 for a dust bag 17 is pushed. To hold the dust bag 17 lying transversely in front of the hand-held belt sander, a holder 18 is provided which starts from the clamp holder 16 which is pushed over the flange 15 designed as a guide. In the exemplary embodiment, the holder 18 consists of one piece with the clamping holder 16, which forms a U-shaped guide with slightly conically diverging legs. The two legs are pushed over the appropriately designed flange 15 and thus secure the hold of the clamping bracket 16 with the bracket 18. The bracket 18 has an upwardly extending web part 20 which merges into a transverse bracket 22 holding the dust bag 17 above. The holder has on its underside 18 has a protective strip 19 which extends over the otherwise open front area of the grinding belt 1 and over the front deflection roller 2.

Bei der neuen Ausführung sitzt der Staubsack 17, wie aus Fig. ohne weiteres erkennbar ist, quer vor dem Handbandschleifer, der dadurch relativ schmal baut. Ein seitlich abstehender Staubsack ist nicht vorhanden. Die Schutzleiste 19 deckt bei Bearbeitung und bei aufgesteckter Halterung 18 den vorderen Bereich des Schleifbandes ab. Nach Abnahme der Halterung 18 wird es - wie Fig. 3 und 4 zeigen - auch möglich, Auskehlungen 23 mit dem vorderen Teil 1a des Schleifbandes 1 zu bearbeiten. Besonders günstig lässt sich dies-wie in den Fig. 3 und 4 gezeigt-durchführen, wenn der Handbandschleifer mit seiner Schleifbandfläche nach oben gedreht und stationär mit einer Hilfshalterung 24 z. B. an einen Tisch 25 befestigt wird. Natürlich lassen sich Auskehlungen auch in der Normalarbeitslage mit dem Handbandschleifer bearbeiten. Das war bisher nicht möglich.In the new design, the dust bag 17, as can be seen from FIG. 1, sits transversely in front of the hand-held belt grinder, which is therefore relatively narrow. A dust bag protruding to the side is not available. The protective strip 19 covers the front area of the grinding belt during processing and with the holder 18 attached. After the holder 18 has been removed, it is also possible, as shown in FIGS. 3 and 4, to machine grooves 23 with the front part 1 a of the grinding belt 1. This can be carried out particularly cheaply, as shown in FIGS. 3 and 4, if the hand belt sander is turned with its abrasive belt surface upwards and stationary with an auxiliary holder 24, for example. B. is attached to a table 25. Of course, grooves can also be processed in the normal working position with the hand belt sander. So far this has not been possible.

Ein Vorteil des neuen Handbandschleifers liegt auch darin, dass eine sehr gute Führung und Handhabung durch den nach vorne verlagerten Gesamtschwerpunkt gegeben ist. Der neue Handbandschleifer kann als Einhandschleifer eingesetzt werden. Die Hand der Bedienungsperson drückt durch die Gesamtbauweise gegen die aktive Schleiffläche. Das Motorgewicht und die Handandrückkraft ergeben so einen idealen Andruck für den Schleifvorgang. Der Handgriff 5 verläuft etwa in der Höhe der Oberkante des Antriebsaggregates 6 nach hinten, so dass auch eine flache Bauweise möglich wird, die einen Angriff verhältnismässig nahe am Schleifband zulässt. Auch dadurch wird die Handhabung wesentlich erleichtert.Another advantage of the new hand-held belt sander is that the overall center of gravity has been shifted forward to ensure excellent guidance and handling. The new hand belt sander can be used as a one-hand sander. The operator's hand presses against the active grinding surface due to the overall design. The motor weight and the hand pressure result in an ideal pressure for the grinding process. The handle 5 runs approximately at the height of the upper edge of the drive unit 6 to the rear, so that a flat design is also possible which allows an attack relatively close to the grinding belt. This also makes handling much easier.

Claims (6)

1. Manual belt grinding machine with an endless grinding belt (1) run over two guide rollers (2, 3) and a pressure shoe (4) with a drive unit (6) arranged above the grinding belt with a handle (5) and with a fan for dust extraction and an extraction channel with an extractor opening which can be covered with a dust bag, on which the drive unit (6) is placed in the area of the front guide roller (2) and the extractor opening (14) is arranged approximately above this front guide roller (2), characterised in that the extractor opening (14) is open forwards and provided there with a holding flange (15) for an easily removable clamp holder (16) for the dust bag (17), which is constructed in such a way that it is fitted at right angles in front of the manual belt grinding machine.
2. Manual belt grinding machine according to claim 1, characterised in that the clamp holder (16) is provided with a U-shaped guide with lightly tapered divergent legs which can be slid over the holding flange (15).
3. Manual belt grinding machine according to claims 1 and 2, characterised in that the clamp holder (16) is provided with an integral holder (18) for the dust bag (17) which extends at right angles to the front side of the drive unit (6).
4. Manual belt grinding machine according to claim 3, characterised in that the holder (18) is provided with a web (20) extending upwards and a transversally running bow (22) extending from the web for holding the dust bag (17).
5. Manual belt grinding machine according to claim 3, characterised in that the grinding belt (1) lies free in the area of the front guide roller (2) and is covered by a protection strip (19) which forms a part of the holder (18) for the dust bag (17).
6. Manual belt grinding machine according to claim 1, characterised in that the handle (5) extends rearwards approximately at the height of the upper edge of the drive unit and forms a closed bow with the casing of the belt grinding machine.
EP83100996A 1982-03-05 1983-02-03 Manual belt grinding machine Expired EP0088233B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100996T ATE29685T1 (en) 1982-03-05 1983-02-03 HAND BELT SANDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207968 1982-03-05
DE19823207968 DE3207968A1 (en) 1982-03-05 1982-03-05 HANDBAND SANDER

Publications (3)

Publication Number Publication Date
EP0088233A2 EP0088233A2 (en) 1983-09-14
EP0088233A3 EP0088233A3 (en) 1985-05-08
EP0088233B1 true EP0088233B1 (en) 1987-09-16

Family

ID=6157419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100996A Expired EP0088233B1 (en) 1982-03-05 1983-02-03 Manual belt grinding machine

Country Status (3)

Country Link
EP (1) EP0088233B1 (en)
AT (1) ATE29685T1 (en)
DE (2) DE3207968A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432974B4 (en) * 1994-09-16 2008-10-16 Robert Bosch Gmbh Hand-guided, electric belt sander
CN111843712B (en) * 2020-07-31 2021-08-13 重庆森发光学科技有限公司 All-platinum optical glass lens clamping device with cleaning function
CN111941187B (en) * 2020-08-13 2022-08-19 盐城钧硕信息科技有限公司 Computer machine case is polished and sweeps clearance integration equipment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602436C (en) * 1932-06-16 1934-09-08 C F Scheer & Cie G M B H Belt grinder
US2069502A (en) * 1936-04-21 1937-02-02 American Floor Surfacing Mach Sanderplane
FR1055527A (en) * 1952-05-07 1954-02-19 Avodec Sanding machine
US3049842A (en) * 1959-04-23 1962-08-21 Scheer & Cie C F Portable grinding machine
DE1274916C2 (en) * 1965-08-13 1973-05-30 Lutz Kg Eugen Hand belt grinder with dust extractor
US3391499A (en) * 1966-03-17 1968-07-09 Singer Co Dust pickup systems for portable belt sanders
US3938283A (en) * 1975-02-24 1976-02-17 The Singer Company Dust bag support

Also Published As

Publication number Publication date
EP0088233A2 (en) 1983-09-14
EP0088233A3 (en) 1985-05-08
ATE29685T1 (en) 1987-10-15
DE3207968A1 (en) 1983-09-08
DE3373637D1 (en) 1987-10-22

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